Target Audience:
DIYers, independent repair shops, fleet maintenance
Advantage Over Print:
Instant access, searchability, cost-effectiveness, updated information potential
Convenience:
No physical storage required, accessible from multiple devices
User Interface:
User-friendly, push-button access to information
Primary Coverage:
1999 GMC Sierra 2500
Licensing:
Officially Licensed, Derived from OE Materials
Estimated Page Count:
Extensive (Equivalent to multiple printed volumes)
Type:
Online Service and Repair Manual
Format:
Web-based Software
Accessibility:
PC, Laptop, Smartphone, Tablet (via web browser and internet connection)
Duration:
1 Year (with discounts for renewal)
Engine:
Comprehensive repair, diagnostics, and overhaul for all gasoline engines
Transmission:
Service and repair for automatic and manual transmissions
Drivetrain:
Front-wheel drive (if applicable), rear-wheel drive, axles, driveshafts, differentials
Brakes:
Hydraulic system, ABS, disc and drum brake service, parking brake
Suspension:
Front and rear suspension components, steering linkage, alignment specifications
Steering:
Power steering system, steering column, wheel and tire specifications
Electrical:
Wiring diagrams, component testing, starter, alternator, battery, lighting system
HVAC:
Heating, ventilation, and air conditioning system diagnosis and repair
Body:
Body panel removal/installation, interior trim, glass, bumpers
Chassis:
Frame, fuel system, exhaust system
Maintenance:
Oil changes, filter replacements, fluid checks, lubrication
Troubleshooting:
Diagnostic procedures for common and uncommon issues
Repair:
Step-by-step repair instructions for all major systems
Rebuild:
Engine and transmission rebuild procedures
Diagnostics:
OBD-II diagnostic trouble codes (DTCs) and their meanings
Depth:
Comprehensive (from basic DIY to advanced technician level)
Engine Option 1:
5.0L (305 cu in) Vortec 305 V8 (LM7)
Engine Option 2:
5.7L (350 cu in) Vortec 350 V8 (L31)
Engine Option 3:
7.4L (454 cu in) Vortec 454 V8 (L29)
5.0L Vortec 305 V8:
Approx. 230 hp @ 4600 rpm, 285 lb-ft @ 3200 rpm
5.7L Vortec 350 V8:
Approx. 255 hp @ 4600 rpm, 330 lb-ft @ 3200 rpm
7.4L Vortec 454 V8:
Approx. 295 hp @ 4000 rpm, 410 lb-ft @ 3200 rpm
Fuel Delivery:
Electronic Fuel Injection (EFI) - Sequential Port Injection
Recommended Fuel:
Unleaded Gasoline
Ignition Type:
Distributorless Ignition System (DIS) or Distributor Ignition (DI) depending on specific configuration
Standard Transmission:
4-Speed Automatic (e.g., 4L60E for 5.0L/5.7L, 4L80E for 7.4L)
Optional Transmission:
5-Speed Manual (e.g., NV4500 for specific configurations)
Transmission Features:
Electronic transmission control (for automatics), overdrive
Approximate Length:
Varies by cab/bed configuration (e.g., 246.4 inches for 8ft bed)
Approximate Width:
Approx. 78.7 inches
Approximate Height:
Approx. 75.5 inches
Wheelbase Options:
130.0 inches (Regular Cab), 153.0 inches (Extended Cab)
Curb Weight Range:
Approx. 4,800 - 5,600 lbs
Gvwr Range:
6,400 - 8,600 lbs
NHTSA Front Impact Driver:
Not Rated (for 1999 model year)
NHTSA Front Impact Passenger:
Not Rated (for 1999 model year)
ABS:
Available Anti-lock Braking System (ABS)
Airbags:
Driver and Passenger Airbags
Seatbelts:
3-point front seatbelts with pretensioners
Infotainment System:
Basic AM/FM stereo with cassette and CD player options, manual climate controls
Driver Assistance Features:
Limited to ABS and cruise control (if equipped)
Connectivity Options:
No integrated connectivity features (e.g., Bluetooth, USB)
Oil Change Interval:
Every 3,000-5,000 miles or 3-6 months (refer to manual for specific engine/oil type)
Transmission Fluid Change:
Every 30,000-60,000 miles (refer to manual and driving conditions)
Coolant Flush:
Every 30,000-50,000 miles or 2-3 years
Engine Oil Viscosity:
Typically SAE 5W-30 or 10W-30 (confirm with manual based on engine and temperature)
Transmission Fluid Type Auto:
Dexron III (or compatible)
Coolant Type:
Conventional Green Ethylene Glycol based coolant (50/50 mix)
Common Issue 1:
Intake manifold gasket leaks (Vortec engines)
Common Issue 2:
Cracked distributor caps/rotors (if equipped with distributor)
Common Issue 3:
Fuel pump failures
Common Issue 4:
Transmission shift solenoid issues (4L60E/4L80E)
Gmc Truck Legacy:
GMC has a long history of producing reliable and robust trucks, emphasizing heavy-duty capabilities.
Third Generation C K Platform:
The 1999 Sierra 2500 is part of the GMT800 platform, the third generation of GM's full-size trucks, introducing significant styling and engineering updates.
Manufacturing Location:
Primarily Fort Wayne, Indiana, USA
